| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.karaf.decanter.appender.elasticsearch.rest; |
| |
| import org.apache.http.HttpEntity; |
| import org.apache.http.HttpHost; |
| import org.apache.http.auth.AuthScope; |
| import org.apache.http.auth.UsernamePasswordCredentials; |
| import org.apache.http.client.CredentialsProvider; |
| import org.apache.http.client.config.RequestConfig; |
| import org.apache.http.entity.ContentType; |
| import org.apache.http.impl.client.BasicCredentialsProvider; |
| import org.apache.http.impl.nio.client.HttpAsyncClientBuilder; |
| import org.apache.http.nio.entity.NStringEntity; |
| import org.apache.http.util.EntityUtils; |
| import org.apache.karaf.decanter.api.marshaller.Marshaller; |
| import org.apache.karaf.decanter.appender.utils.EventFilter; |
| import org.elasticsearch.client.Response; |
| import org.elasticsearch.client.RestClient; |
| import org.elasticsearch.client.RestClientBuilder; |
| import org.osgi.service.component.ComponentContext; |
| import org.osgi.service.component.annotations.*; |
| import org.osgi.service.event.Event; |
| import org.osgi.service.event.EventConstants; |
| import org.osgi.service.event.EventHandler; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.net.URL; |
| import java.text.SimpleDateFormat; |
| import java.util.*; |
| |
| @Component( |
| name ="org.apache.karaf.decanter.appender.elasticsearch.rest", |
| immediate = true, |
| configurationPolicy = ConfigurationPolicy.REQUIRE, |
| property=EventConstants.EVENT_TOPIC + "=decanter/collect/*" |
| ) |
| public class ElasticsearchAppender implements EventHandler { |
| |
| public static final String ADDRESSES_PROPERTY = "addresses"; |
| public static final String USERNAME_PROPERTY = "username"; |
| public static final String PASSWORD_PROPERTY = "password"; |
| public static final String INDEX_PREFIX_PROPERTY = "index.prefix"; |
| public static final String INDEX_TYPE_PROPERTY = "index.type"; |
| public static final String INDEX_EVENT_TIMESTAMPED_PROPERTY = "index.event.timestamped"; |
| |
| public static final String ADDRESSES_DEFAULT = "http://localhost:9200"; |
| public static final String USERNAME_DEFAULT = null; |
| public static final String PASSWORD_DEFAULT = null; |
| public static final String INDEX_PREFIX_DEFAULT = "karaf"; |
| public static final String INDEX_TYPE_DEFAULT = "decanter"; |
| public static final String INDEX_EVENT_TIMESTAMPED_DEFAULT = "true"; |
| |
| @Reference |
| public Marshaller marshaller; |
| |
| private RestClient client; |
| |
| private Dictionary<String, Object> config; |
| |
| private final SimpleDateFormat tsFormat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss,SSS'Z'"); |
| private final SimpleDateFormat indexDateFormat = new SimpleDateFormat("yyyy.MM.dd"); |
| |
| private final static Logger LOGGER = LoggerFactory.getLogger(ElasticsearchAppender.class); |
| |
| @SuppressWarnings("unchecked") |
| @Activate |
| public void activate(ComponentContext context) { |
| open(context.getProperties()); |
| } |
| |
| public void open(Dictionary<String, Object> config) { |
| this.config = config; |
| |
| String addressesString = getValue(config, ADDRESSES_PROPERTY, ADDRESSES_DEFAULT); |
| String username = getValue(config, USERNAME_PROPERTY, USERNAME_DEFAULT); |
| String password = getValue(config, PASSWORD_PROPERTY, PASSWORD_DEFAULT); |
| |
| Set<String> addresses = new HashSet<String>(Arrays.asList(addressesString.split(","))); |
| |
| HttpHost[] hosts = new HttpHost[addresses.size()]; |
| int i = 0; |
| for (String address : addresses) { |
| try { |
| URL url = new URL(address); |
| hosts[i] = new HttpHost(url.getHost(), url.getPort(), url.getProtocol()); |
| i++; |
| } catch (Exception e) { |
| LOGGER.warn("Bad elasticsearch address {}", address, e); |
| } |
| } |
| RestClientBuilder restClientBuilder = RestClient.builder(hosts); |
| |
| restClientBuilder.setRequestConfigCallback(new RestClientBuilder.RequestConfigCallback() { |
| @Override |
| public RequestConfig.Builder customizeRequestConfig(RequestConfig.Builder requestConfigBuilder) { |
| return requestConfigBuilder.setConnectTimeout(1000) |
| .setSocketTimeout(10000); |
| } |
| }).setMaxRetryTimeoutMillis(20000); |
| |
| if (username != null) { |
| final CredentialsProvider credentialsProvider = new BasicCredentialsProvider(); |
| credentialsProvider.setCredentials(AuthScope.ANY, new UsernamePasswordCredentials(username, password)); |
| restClientBuilder.setHttpClientConfigCallback( |
| new RestClientBuilder.HttpClientConfigCallback() { |
| @Override |
| public HttpAsyncClientBuilder customizeHttpClient(HttpAsyncClientBuilder httpAsyncClientBuilder) { |
| return httpAsyncClientBuilder.setDefaultCredentialsProvider(credentialsProvider); |
| } |
| } |
| ); |
| } |
| |
| client = restClientBuilder.build(); |
| |
| TimeZone tz = TimeZone.getTimeZone( "UTC" ); |
| tsFormat.setTimeZone(tz); |
| indexDateFormat.setTimeZone(tz); |
| } |
| |
| private String getValue(Dictionary<String, Object> config, String key, String defaultValue) { |
| String value = (String)config.get(key); |
| return (value != null) ? value : defaultValue; |
| } |
| |
| @Deactivate |
| public void close() { |
| try { |
| client.close(); |
| } catch (Exception e) { |
| LOGGER.warn("Warning when closing elasticsearch client", e); |
| } |
| } |
| |
| @Override |
| public void handleEvent(Event event) { |
| if (EventFilter.match(event, config)) { |
| try { |
| send(event); |
| } catch (Exception e) { |
| LOGGER.warn("Can't append into Elasticsearch", e); |
| } |
| } |
| } |
| |
| private void send(Event event) throws Exception { |
| String indexName = getIndexName(getValue(config, INDEX_PREFIX_PROPERTY, INDEX_PREFIX_DEFAULT), getDate(event)); |
| String jsonSt = marshaller.marshal(event); |
| |
| // elasticsearch 6.x only allows one type per index mapping, the _type is part of the document |
| String endpoint = String.format("/%s/%s", indexName, getValue(config, INDEX_TYPE_PROPERTY, INDEX_TYPE_DEFAULT)); |
| HttpEntity request = new NStringEntity(jsonSt, ContentType.APPLICATION_JSON); |
| |
| client.performRequest("POST", endpoint, Collections.singletonMap("refresh", "true"), request); |
| } |
| |
| private Date getDate(Event event) { |
| Long ts = (Long)event.getProperty("timestamp"); |
| Date date = ts != null ? new Date(ts) : new Date(); |
| return date; |
| } |
| |
| private String getIndexName(String prefix, Date date) { |
| boolean indexTimestamped = Boolean.parseBoolean(getValue(config, INDEX_EVENT_TIMESTAMPED_PROPERTY, INDEX_EVENT_TIMESTAMPED_DEFAULT)); |
| if (indexTimestamped) { |
| return prefix + "-" + indexDateFormat.format(date); |
| } else { |
| return prefix; |
| } |
| } |
| |
| } |